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Ultrasonic device suitable for long-time treatment of magnesium alloy melt

A magnesium alloy, long-term technology, applied in the field of metal smelting and ingot casting, can solve the problems of difficulty in normal operation of the transducer, high smelting temperature of magnesium alloy, low melt processing efficiency, etc., so as to improve the service life and prolong the service life. , the effect of blocking heat conduction and radiation

Active Publication Date: 2019-03-26
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the high smelting temperature of magnesium alloy (>600°C) and long processing time, ordinary ultrasonic melt processing equipment can hardly withstand the long-term high-temperature working environment, which makes it difficult for transducers to work normally, low melt processing efficiency, and even shutdown

Method used

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  • Ultrasonic device suitable for long-time treatment of magnesium alloy melt
  • Ultrasonic device suitable for long-time treatment of magnesium alloy melt
  • Ultrasonic device suitable for long-time treatment of magnesium alloy melt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 An ultrasonic device suitable for processing magnesium alloy melts for a long time

[0032] The ultrasonic device of the magnesium alloy melt of the present invention comprises a controller and a probe, such as figure 1 shown. The probe includes a transducer 10, a horn 11, a connecting rod 16 and a tool head 17 in turn, and also includes a cooling device, such as figure 2 shown.

[0033] The probe is placed in a cooling device when in use; the cooling device includes a casing and a cooling chamber 1 formed by the casing; the cooling chamber is divided into an upper cooling chamber 2 and a lower cooling chamber 3; the upper and lower cooling chambers pass through The through hole 6 is connected; the top of the upper cooling chamber 2 has an air inlet 4; the lower part of the lower cooling chamber 2 has an air outlet 4; a fan 5 is arranged below the air inlet 4.

[0034] The air inlet 4 and the air outlet 7, in order to ensure the cooling effect, the greater...

Embodiment 2

[0037] Example 2 An ultrasonic device suitable for processing magnesium alloy melts for a long time

[0038] The ultrasonic device of the magnesium alloy melt of the present invention comprises a controller and a probe, such as figure 1 shown. The probe includes a transducer 10, a horn 11, a connecting rod 16 and a tool head 17 in turn, and also includes a cooling device, such as image 3 shown.

[0039] The probe is placed in a cooling device when in use; the cooling device includes a casing and a cooling chamber 1 formed by the casing; the cooling chamber is divided into an upper cooling chamber 2 and a lower cooling chamber 3; the upper and lower cooling chambers pass through The through hole 6 is connected; the top of the upper cooling chamber 2 has an air inlet 4; the lower part of the lower cooling chamber 2 has an air outlet 4; a fan 5 is arranged below the air inlet 4.

[0040] The air inlet 4 and the air outlet 7, in order to ensure the cooling effect, the greater ...

Embodiment 3

[0044] During die casting of AZ80, the melt needs to be treated before the ingot is solidified. Due to the short time, the ultrasonic device shown in Example 1 can be selected for treatment, and air can be introduced for cooling. It is recommended that the melt temperature be lowered to about 610°C for ultrasonic treatment. The treatment time varies according to the size of the ingot, generally about 2-5 minutes. During treatment, the ultrasonic probe should be inserted into the melt 15mm below the liquid surface, and then cooled rapidly.

[0045]Practice has shown that ultrasonic treatment is carried out in AZ80 magnesium alloy melt, and more gas may be mixed in the magnesium alloy melt, which will help to form a large number of cavitation nuclei, which will be conducive to the generation of cavitation bubbles. The cavitation bubble breaks away from the stable zone and collapses to release a large amount of energy, which is enough to break up the growing dendrites. Part of the...

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Abstract

The invention discloses an ultrasonic device suitable for long-time treatment of magnesium alloy melt. A controller and a probe are included. The probe sequentially comprises an energy converter, an amplitude changing rod, a connecting rod and a tool head. A cooling device is further included. During usage, the probe is arranged in the cooling device. The cooling device comprises a shell and a cooling cavity formed by the shell. The cooling cavity is divided into an upper cooling cavity and a lower cooling cavity which are connected through a through hole. An air inlet is formed in the top endof the upper cooling cavity. An air outlet is formed in the lower portion of the lower cooling cavity. The upper cooling cavity and the lower cooling cavity can be separated. The device is provided with the cooling device, the probe is arranged in the cooling device, and it can be guaranteed that the temperature rise of the probe is little in the long-time magnesium alloy melt treatment process.Different cooling media are selected, the ultrasonic device can adapt to different magnesium alloy casting processes, meanwhile, short-distance melt high-temperature baking and dust pollution to the probe are avoided, and the service life of the probe device is indirectly prolonged.

Description

technical field [0001] The invention relates to an ultrasonic device suitable for processing magnesium alloy melt for a long time, which belongs to the field of metal smelting and ingot casting. Background technique [0002] Due to its low density, high specific strength and specific stiffness, magnesium alloys have important application value and broad application prospects in the fields of automobiles, electronics, aviation, aerospace, and national defense. Usually, the magnesium alloy melt is easy to absorb air, and the solidification shrinkage is relatively large, which leads to defects such as pores, shrinkage cavities, and shrinkage porosity in the as-cast structure. The macro and micro segregation of magnesium alloys restrict the development and application of magnesium alloys. Even with homogenization heat treatment, some as-cast defects cannot completely disappear, which will affect the hot workability and final comprehensive performance of large magnesium alloy pr...

Claims

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Application Information

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IPC IPC(8): B22D27/00
CPCB22D27/00
Inventor 李兴刚张奎李伟李永军马鸣龙石国梁袁家伟
Owner GRIMAT ENG INST CO LTD
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